Two-wheeled electric vehicle with lithium battery and controller placed in saddle barrel
By setting up battery and controller slots in the saddle and using a fixing method, the problem of lithium batteries and controllers tipping over in two-wheeled electric vehicles is solved, improving safety and aesthetics, while saving materials and increasing range.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李栋
- Filing Date
- 2023-04-02
- Publication Date
- 2026-05-01
AI Technical Summary
The lithium batteries and controllers of existing two-wheeled electric vehicles are prone to tipping over due to collisions, and their placement is unsightly and lacks safety.
The lithium battery and controller are placed in the saddle, and the battery and controller slots are molded or injection molded and fixed with springs or screws to prevent vibration. Unnecessary baffles are removed to save materials.
It improves the safety and aesthetics of two-wheeled electric vehicles, while increasing the convenience of backup lithium batteries, reducing the accident rate and saving resources.
Smart Images
Figure CN224184413U_ABST
Abstract
Description
(I) Technical Field
[0001] This utility model relates to a two-wheeled electric vehicle in which a lithium battery and a controller are placed in the saddlebag. (II) Background Technology
[0002] Currently, the batteries and controllers of known two-wheeled electric vehicles are either not placed in the saddle tray but in other parts, or the structure of the saddle is different from the saddle tray structure of this solution. In the event of a collision during driving, they are prone to tipping over, which is unsafe and unsightly. (III) Summary of the Invention
[0003] In order to overcome the shortcomings of existing two-wheeled electric vehicles, this utility model adopts a method of placing the lithium battery and controller in the saddle bucket, which is described in detail below.
[0004] The technical solution adopted in this utility model is as follows: The saddle bag contains a battery slot for holding lithium batteries, a spare battery slot, and a controller slot for holding the controller, which are respectively used to hold the lithium batteries, spare lithium batteries, and controller. The battery slot, spare battery slot, and controller slot are integral with the saddle bag, formed by molding, injection molding, powder metallurgy molding, or welding. The size of the battery slot, spare battery slot, and controller slot (length, width, and height) is determined to accommodate the size of the lithium batteries, spare lithium batteries, and controller used. Springs or spring sheets are used to hold the lithium batteries, spare lithium batteries, and controller in place, providing fixation and protection. To prevent vibration, springs or spring plates are fixed to the inner wall of the saddle bin and under the saddle bin cover with strong adhesive or screws; alternatively, instead of springs or spring plates, flame-retardant material blocks are inserted into the gaps to prevent vibration; alternatively, instead of springs or spring plates, battery slots, spare battery slots, and controller slots are designed to fit snugly to accommodate the lithium battery, spare lithium battery, and controller, respectively; alternatively, instead of springs or spring plates, screws are used to fix the lithium battery, spare lithium battery, and controller to the bottom plate of the saddle bin to prevent vibration. This type of saddle bin, frame, and common components together constitute a complete product. This design uses two types of saddle bins. The first type has a battery slot for the lithium battery and a controller slot for the controller, such as... Figure 1 , Figure 4 and Figure 9 As shown. The second method involves installing two battery slots in the saddlebag for storing lithium batteries and spare lithium batteries, and one controller slot for storing the controller, as shown. Figure 2 , Figure 5 and Figure 10 As shown.
[0005] The advantages of this invention are: by partially updating the design, excessive baffles are removed, saving materials and resources, and also enhancing the aesthetics. Removing the side baffles reduces the width of the vehicle, making it easier for the rider to brace themselves with their legs when the vehicle is unstable, thus increasing safety and reducing the high accident rate of two-wheeled electric vehicles. Placing the lithium battery and controller in the saddle tray is also much more aesthetically pleasing than placing them in other locations. Having a spare lithium battery not only increases the range but also allows for the replacement of a faulty battery during the journey, enabling continued riding. (iv) Description of the attached drawings
[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figure 1 , Figure 2 This is a simplified structural diagram of a saddle-shaped structure that uses springs, spring sheets, or flame-retardant material blocks to secure the lithium battery and controller. Figure 3 This is a front view of a two-wheeled electric vehicle. Figure 4 , Figure 5 This is a simplified structural diagram of a saddle bucket that prevents vibration by ensuring that the battery compartment and controller compartment are closely fitted to the size of the lithium battery and controller. Figure 6 This is a wiring diagram of the brushless controller and external connections. Figure 7 This is a diagram illustrating the working principle and internal structure of a brushless controller. Figure 8 This is a diagram showing the connection between the brushless controller and the external circuitry. Figure 9 and Figure 10 This is a simplified structural diagram of a saddlebag where the lithium battery and controller are secured with screws. The diagram shows: 1. Lithium battery; 2. Spare lithium battery; 3. Spring, spring sheet, or flame-retardant material block; 4. Battery slot; 5. Output port; 6. Plug; 7. Frame; 8. Wheel; 9. Electric wheel hub; 10. Saddlebag; 11. Wire; 12. Handlebar and shock absorber; 13. Brake lever; 14. Horn; 15. Headlight; 16. Rearlight; 17. Spare battery slot; 18. Controller; 19. Controller slot; 20. Saddlebag cover; 21. Hinge; 22. Pedals; 23. Charging port; 24. Saddlebag lock; 25. Gear lever; 26. Instrument panel; 27. Power switch; 28. Screw. Figure 6 See attached diagram for details. Figure 6 , Figure 6 Using a combination of diagrams and text makes it easier to explain the functions and uses. Figure 7 , Figure 8 The accompanying drawings are not convenient to describe using numbers such as 1, 2, 3, etc. The accompanying drawings can be explained more clearly in conjunction with the "About the Controller" section below.
[0007] Regarding the controller (using a common brushless controller model as an example).
[0008] Controller functions and roles
[0009] The full name of the controller is electric motor speed controller. Its main function is to control the speed of the electric vehicle in conjunction with the throttle, and it commonly uses voltage-based speed regulation. Depending on the specific needs, it may also have other auxiliary functions, such as brake power-off, battery undervoltage protection, overcurrent protection, zero-start, reverse charging, speed display, power assist, and intelligent voice control. The control system consists of a main controller, instrument display, throttle, and brake power-off lever. Currently, most controllers are brushless, used in conjunction with brushless motors.
[0010] Structure of a brushless controller
[0011] Brushless controllers are primarily used in conjunction with brushless motors. The appearance and external wiring of a brushless controller are as follows: Figure 6 As shown. Most brushless controllers on the market today are universal controllers, and their internal pulse width modulation integrated circuits use dedicated integrated circuits for brushless controllers.
[0012] Working principle of brushless controller
[0013] The working principle and internal structure of the brushless controller are as follows: Figure 7 As shown.
[0014] The working principle of the brushless controller is as follows:
[0015] 1. The internal regulated power supply provides the operating voltage for the main processing chip and electronic components inside the controller.
[0016] 2. The main processing chip operates after being powered by PWM. Based on the Hall effect signal from the brushless motor, it selectively turns the three MOSFET drive circuits on and off to complete the commutation of the motor. Simultaneously, based on the input voltage of the throttle, it mixes a carrier signal with a corresponding pulse width with the MOSFET turn-on signal to control the motor speed. The MOSFET drive circuit shapes and amplifies the PWM signal for the MOSFETs. Furthermore, the drive level of the three MOSFETs must be higher than the battery supply voltage; therefore, the MOSFET drive circuit must also have a boost function to convert the three MOSFET turn-on signals into ultra-high square wave signals higher than the battery voltage. MOSFETs are high-current switching devices, and their turn-on and turn-off times are controlled by the mixed signal synthesized from the turn-on signal and the PWM signal.
[0017] 3. The undervoltage protection circuit stops the PWM chip signal output when the battery voltage drops below the controller's set value to ensure that the battery does not discharge under low voltage conditions.
[0018] 4. The current limiting protection circuit limits the maximum current output by the controller to protect the battery, controller, motor, etc. from exceeding the permissible current range.
[0019] A brushless controller consists of power electronic devices and integrated circuits. Its functions include receiving start, stop, and braking signals from the motor to control the motor's start, stop, and braking; receiving signals from the Hall position sensor and forward / reverse signals to control the switching of the power transistors in the inverter bridge to generate continuous torque; receiving speed commands and speed feedback signals to control and adjust the speed; and providing protection and display functions.
[0020] How the brushless controller is connected to the external circuit: Figure 8 As shown.
[0021] The main working process of the brushless controller is as follows:
[0022] 1. When the user turns on the power lock, the instrument receives power, the power indicator light illuminates, and the battery level is displayed. Simultaneously, the controller also receives power. At this time, the motor does not rotate, but the controller outputs 5 volts to power the Hall effect sensor in the throttle and simultaneously outputs 5 volts to power the Hall effect sensor in the motor.
[0023] 2. When the user rotates the throttle, the throttle signal line outputs a voltage of 1-4.2 volts. This voltage is transmitted to the controller, and the controller's zero-start function starts the motor. After the motor starts, its internal magnet rotates, causing the Hall sensor to generate a corresponding position signal. This causes the Hall element to output a switching signal voltage of 0-5 volts. This signal is transmitted to the controller, and the three-phase control leads output an AC voltage of approximately 0-38 volts from low to high. This voltage is applied to the motor coil, and the motor begins to rotate from slow to fast.
[0024] 3. When the user squeezes the brake lever, the controller receives a 5-0 volt (low-level braking) brake signal voltage, disconnects the power supply to the motor, and the motor stops running, thus serving as a brake and power cut-off function. (V) Detailed Implementation
[0025] A battery slot (4), a spare battery slot (17), and a controller slot (19) are added to the saddle bucket to house the lithium battery (1), the spare lithium battery (2), and the controller (18), respectively. The battery slot (4), the spare battery slot (17), and the controller slot (19) are integral with the saddle bucket (10) and are formed by molding, injection molding, powder metallurgy molding, or welding. The size (i.e., length, width, and height) of the battery slot, the spare battery slot, and the controller slot is determined by the size of the lithium battery (1), the spare lithium battery (2), and the controller (18) to be used. Springs or spring plates (3) are used to hold the lithium battery (1), the spare lithium battery (2), and the controller (18) in place to fix them and prevent vibration. The springs or spring plates (3) are fixed to the inner wall of the saddle bucket (10) and under the saddle bucket cover (20) by strong adhesive or screws. Figure 1 and Figure 2As shown; or without springs or spring sheets (3), the vibration is prevented by inserting flame-retardant material blocks into the gaps; or without springs or spring sheets (3), the vibration is prevented by ensuring that the battery slot, spare battery slot, and controller slot are tightly fitted to the sizes of the lithium battery, spare lithium battery, and controller they contain, respectively. Figure 4 and Figure 5 As shown; or without springs or spring sheets (3), screws (28) are used to fix the lithium battery (1), spare lithium battery (2), and controller (18) to the bottom plate of the saddle to prevent vibration, such as Figure 9 and Figure 10 As shown. The plug (6) is inserted into the output port (5). Excessive baffles are removed to save materials, increase safety and mileage. The complete product consists of this saddle and frame, wheels, handlebars, wires, front and rear lights, horn, brake lever, lithium battery, throttle, instrument panel, power switch, controller, electric hub and common parts.
Claims
1. A two-wheeled electric vehicle with a lithium battery and controller housed in a saddlebag, characterized in that: In the saddle bucket, there are a battery groove for placing lithium battery and a controller groove for placing controller, respectively used for placing lithium battery and controller; the battery groove and the controller groove are an integral part of the saddle bucket, adopting mold forming, injection molding, powder metallurgy forming or welding forming; the size of the battery groove and the controller groove, i.e. length, width and height, is determined by the size of the lithium battery and the controller to be adopted; the lithium battery and the controller are resisted by springs or spring leaves, which play a role in fixing and preventing vibration, and the springs or spring leaves are fixed in the inner wall of the saddle bucket and under the saddle bucket cover by strong glue or screws; or without springs or spring leaves, the lithium battery and the controller are prevented from vibration by inserting blocks of flame-retardant material into the gaps; or without springs or spring leaves, the lithium battery and the controller are prevented from vibration by the tight fit of the battery groove and the controller groove with the lithium battery and the controller to be accommodated; or without springs or spring leaves, the lithium battery and the controller are fixed on the bottom plate of the saddle bucket by screws to prevent vibration; the saddle bucket, the frame and the commonly used components jointly constitute a complete set of goods.
2. A two-wheeled electric vehicle having a lithium battery and a controller placed in a saddle tank, characterized in that: In the saddle bucket, there are two battery grooves for placing lithium battery and a controller groove for placing controller, respectively used for placing lithium battery, backup lithium battery and controller; the battery groove, the backup battery groove and the controller groove are an integral part of the saddle bucket, adopting mold forming, injection molding, powder metallurgy forming or welding forming; the size of the battery groove, the backup battery groove and the controller groove, i.e. length, width and height, is determined by the size of the lithium battery, the backup lithium battery and the controller to be adopted; the lithium battery, the backup lithium battery and the controller are resisted by springs or spring leaves, which play a role in fixing and preventing vibration, and the springs or spring leaves are fixed in the inner wall of the saddle bucket and under the saddle bucket cover by strong glue or screws; or without springs or spring leaves, the lithium battery, the backup lithium battery and the controller are prevented from vibration by inserting blocks of flame-retardant material into the gaps; or without springs or spring leaves, the lithium battery, the backup lithium battery and the controller are prevented from vibration by the tight fit of the battery groove, the backup battery groove and the controller groove with the lithium battery, the backup lithium battery and the controller to be accommodated; or without springs or spring leaves, the lithium battery, the backup lithium battery and the controller are fixed on the bottom plate of the saddle bucket by screws to prevent vibration; the saddle bucket, the frame and the commonly used components jointly constitute a complete set of goods.